Book/Report

FZJ-2020-02247

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Superdeformation in GD-146: erste Beobachtung einer Bandenkreuzung

Strähle, K. (Corresponding author)FZJ*

1990
Forschungszentrum Jülich GmbH Zentralbibliothek, Verlag Jülich

Please use a persistent id in citations: http://hdl.handle.net/2128/25036

Report No.: Juel-Spez-0566

Abstract: High-spin states of the nucleus $^{146}$Gd were populated in a $^{110}$Pd ($^{40}$Ar, 4n)reaction. The emitted $\gamma$-radiation was measured using the OSIRIS-spectrometer.A superdeformed band consisting of 13 discrete transitions was found in $^{146}$Gd.From the data obtained in a second experiment, using a backed target, thelifetimes of the states in the SDB have been measured using the DSA-method.An average quadrupolmoment of Q$_{o}$=12± 2 eb could be deduced for the band.A band crossing occurs at rotational frequency of $\hbar \omega$ = 0.65 MeV. lt is for thefirst time that a crossing could be observed in a superdeformed band. Fromtheoretical calculations a $\pi$6$^{2}$ $\nu$7$^{i}$ configuration with odd spin an odd parity issuggested. The behaviour of the dynamic moment of inertia can be reproducedby cranked Nilsson-model calculations assuming a crossing of the [651 1/2]and [642 5/2] single-neutron levels.

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Contributing Institute(s):

1. Publikationen vor 2000 (PRE-2000 ; Retrocat)

Research Program(s):

1. 899 - ohne Topic (POF3-899) (POF3-899)

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